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STEP 1
Use of well lubricated
bolts & fl at washers are required.
An anti-seize thread lubricant
(IMS Copperfl ake or equivalent)
is highly recommended.
SEE BOLT SPECIFICATION TABLES AT THE END OF THESE INSTRUCTIONS
FOR SELECTION OF PROPER BOLT, SIZE & QUANTITIES
STEP 2
Place the valve and handle in a closed position. Place a user-
supplied 1/8" gasket having a shore "A" durometer of approximately 60
between the valve body and fl ange, align the bolt holes of the mating fl anges
and gasket. Insert all bolts, washers, and nuts.
AT THIS TIME, BE SURE THAT THE FLANGE
AND GASKET SURFACES ARE FLUSH AND SQUARELY ALIGNED.
Tighten the nuts by hand until they are snug.
STEP 3
Using a 180° opposing sequence,
tighten fl ange bolts in 5 ft-lb increments to required
specifi cations (See Torque Sequence Chart).
DO NOT USE BOLTS TO BRING TOGETHER IMPROPERLY MATED
FLANGES.
TRUE LUG BUTTERFLY VALVE INSTALLATION
Connects from either side, regardless of direction fl ow.
STEP 1
With the valve in the closed position, place
user-supplied gasket and pipe-mounted fl ange on the
desired side of the valve body. Insert the proper size &
length hex head bolts (see Bolt Specifi cation Chart at
the end of these instructions) with fl at washers, through
the pipe-mounted fl ange and gasket. Hand thread hex
head bolts into lug inserts.
AT THIS TIME, BE SURE THAT THE FLANGE
AND GASKET SURFACES ARE FLUSH AND
SQUARELY ALIGNED.
Tighten the bolts by hand until they are snug.
Open valve and check axial displacement & disc clearance. No more than
1/8" displacement on the pipe centerline is allowed.
STEP 2
Using a 180° opposing
sequence, tighten fl ange bolts
in 5 ft-lb increments to required
specifi cations
(See
Torque
Sequence Chart).
DO NOT USE BOLTS TO BRING TOGETHER
OPEN
FLANGE
VALVE
BODY
BOLT &
SINGLE SIDE
FLAT WASHER
FLANGE
USER
CONNECTION
SUPPLIED
GASKET
IMPROPERLY MATED FLANGES.
3
STANDARD LUG BUTTERFLY VALVE INSTALLATION
(And Lug Insert Installation)
Lug Insert-style Butterfl y Valves require attention to
FLOW direction. Mating Flange must be placed on side
of valve opposite the Lug Insert hex recesses.
For installation of Standard Lug Butterfl y Valves or Lug
Insert Sets, pass lug inserts through each bolt hole from
the side of the valve body containing the hex recesses.
Press lightly until the lug insert is fully seated into the
recess.
Install Pipe-Mounted Mating Flange on side of valve opposite the Lug Insert Hex
recesses. Secure with the proper size & length hex bolts & fl at washers from
opposing side of hex recesses. Pass bolts with washers through fl ange, gasket
and thread into Lug Insert. (See Bolt Specifi cation Chart in next column).
Tighten the nuts by hand until they are snug. AT THIS TIME, BE SURE THAT THE
FLANGE AND GASKET SURFACES ARE FLUSH AND SQUARELY ALIGNED.
Using a 180° opposing sequence, tighten fl ange bolts in 5 ft-lb increments to
required specifi cations (See Torque Sequence Chart).
VALVE BODY
USER-SUPPLIED GASKET
1/8" FULL FACED
FLANGE MUST BE
INSTALLED THIS SIDE
BOLT & FLAT WASHER
TORQUE SEQUENCES
Flange
Size
(in.)
1/2 - 1-1/2
2 - 4
5
6 - 8
10
12
14 - 24
Typical
Lug Insert
(Shape may vary
with size).
HEX RECESSES
LUG INSERT
Recommended
Torque
(ft. lbs.)
12
25
30
40
64
95
110
4
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